Capacitative measuring method with controllable directional effect and corresponding capacitative sensor for industrial use

The method involves subjecting an excitation electrode (2) and a cylindrical excitation electrode with alternating voltage by an alternating voltage generator (5) to produce an excitation field functioning as system potential between the electrodes, a lateral container wall and a container lid. Potential changes caused by measured objects i.e. container wall, are detected relative to measuring electrodes (3). A decoupling electrode (6) and a cylindrical decoupling electrode are subjected with inverse voltage, where controllable directivity of an electrical measuring field is provided. An independent claim is also included for a capacitive sensor.